Polishing machine



July 1, 1941. I.) c. SMITH 2,247,970

POLISHING MACHINE Filed June 14, 1939 2 Sheets-Sheet 1 J, INVENTOR ATTO R N EYS July 1, 1941. 1 c, sMrr 2,247,970

POLISHING MACHINE Filed June 14, 1939 2 Sheets-Sheet 2 Z, CAS 7/?Z Z INVENTOR ATTORNEYS Patented July 1, 1941 UNITED STATES PATENT 1 OFFICE I i 2,247,970 'POL'ISHING MACHINE Leroy '0. smith, Peterboro, Ontario, Canada Application June 14, 1939, Serial No. 279,200

This invention relates to polishing machines, and its general object is to provide a machine that can be used for polishing surfaces of relatively great area, such as floors, table tops, vehicle bodies, etc., in an easy and expeditious manner, and with minimum effort on the part of the user, in that the machine is'light in weight and can be readily handled and guided over the surface to be polished.

A further object is to provide a polishing machine of the motor driven rotary drum type, that includes a polishing element of sheep skin or other like thick wooly material, and the mounting means for the drum of the polishing element, together with the rotating means therefor, are detachably associated in a manner to materially facilitate the application and removal thereof with respect to the casing of the machine, as well as the polishing element with respect to the drum. 7

A still further object is to provide a polishing machine, that is simple in construction, inexpensive to manufacture, and extremely eflicient in operation, use and, service.

This invention also-consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in theaccompanying drawings and specifically pointed out in the appended claim..

In describing the invention in detail, reference will 7 be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a side elevation of the polishing machine which forms the subject matter of the present invention.

Figure 2 is an enlarged fragmentary side view with one of the side walls removed.

Figure 3 is a front elevation, with parts broken away and in section.

Figure 4 is a fragmentary sectional view taken through the joint of the handle sections, with the latter connected together.

Figure 5 is a similar View with the handle sections separated.

Referring to the drawings in detail, it will be noted that in th form shown, the casing of my machine includes an open front and bottom, and the upper wall I is rounded forwardly and rearwardly from the downwardly rounded transverse central portion thereof, with the rearwardly rounded portion merging into an outwardly rounded rear wall 2. Secured to the upper and j team. (01. 15-9 rear walls, are side walls 3 having straight lower edges and substantially rounded front ends, while the remaining edges of the side walls are shaped to follow the shape of the upper and rear walls, as well as recessed to provide shoulders receiving the outer edges of the latter Walls, as clearly shown'in Figure 3.

Mounted in the rear portion of the casing is an electric motor provided with lugs formed on the housing thereof, and formed on and extending forwardly from the rear wall are bracket plates 5 having vertic'al slots extending from the upper ends thereof for the purpose of receiving screw bolts 6 threaded in lugs extending rearwardly' from the upper portion of the motor housing. Cooperating with the bracket plates 5 and screw bolts 6 for securing the motor within the housing, are substantially L-shaped brackets l fixed to the rear wall and having the motor secured thereto by screw bolts 8 extending through the free ends of the brackets l and within'lugs at the lower portion of the motor housing.- Additional or other suitable means may be" employed for securing the motor within the casing. i

Bridging the side Walls at the forward portion of the casing, is a shaft 9 having threaded bores in the ends thereof for receiving screw bolts ID for securing the shaft to the side walls, as best shown in- Figure 3, and the shaft is reduced from its ends for-a portion of its length to provide abutting shoulders for bearings ll mounted on the reduced portions and within recesses in the confronting faces of hub portions [2 for the drum of'the polishing element. The hub portions are formed on or otherwise secured to pulley members I3 for rotating the drum which is provided by the hub portions and a hollow sheet metal cylinder I4 having the hub portions removable from, but snugly fitting within the ends thereof for mounting the cylinder l4 concentrically with respect to the shaft.

The pulley members include annular ribs or flanges l5 and the inner flanges are disposed in abutting relation with the ends of the cylinder M as well as the ends of a cylinder l6 of the polishing element, the latter cylinder being made from cardboard or other inexpensive material and is sleeved on the cylinder l4. Glued or otherwise secured to the cylinder l6 and surrounding the same, is a piece I! of sheep skin or the like having the Wool thereon and the wool is beveled inwardly at its ends, as best shown in Figure 3.

The pulley members l3 are each provided with 

